event.cc revision 13260
112955Sgabeblack@google.com/* 212955Sgabeblack@google.com * Copyright 2018 Google, Inc. 312955Sgabeblack@google.com * 412955Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 512955Sgabeblack@google.com * modification, are permitted provided that the following conditions are 612955Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 712955Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 812955Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 912955Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 1012955Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 1112955Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 1212955Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 1312955Sgabeblack@google.com * this software without specific prior written permission. 1412955Sgabeblack@google.com * 1512955Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1612955Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1712955Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1812955Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 1912955Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2012955Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2112955Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2212955Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2312955Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2412955Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2512955Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2612955Sgabeblack@google.com * 2712955Sgabeblack@google.com * Authors: Gabe Black 2812955Sgabeblack@google.com */ 2912955Sgabeblack@google.com 3012955Sgabeblack@google.com#include "systemc/core/event.hh" 3112955Sgabeblack@google.com 3212988Sgabeblack@google.com#include <algorithm> 3312955Sgabeblack@google.com#include <cstring> 3412955Sgabeblack@google.com#include <utility> 3512955Sgabeblack@google.com 3612957Sgabeblack@google.com#include "base/logging.hh" 3712957Sgabeblack@google.com#include "sim/core.hh" 3812955Sgabeblack@google.com#include "systemc/core/module.hh" 3912955Sgabeblack@google.com#include "systemc/core/scheduler.hh" 4013086Sgabeblack@google.com#include "systemc/ext/core/sc_main.hh" 4113086Sgabeblack@google.com#include "systemc/ext/core/sc_module.hh" 4212955Sgabeblack@google.com 4312955Sgabeblack@google.comnamespace sc_gem5 4412955Sgabeblack@google.com{ 4512955Sgabeblack@google.com 4613086Sgabeblack@google.comEvent::Event(sc_core::sc_event *_sc_event) : Event(_sc_event, nullptr) {} 4712955Sgabeblack@google.com 4813086Sgabeblack@google.comEvent::Event(sc_core::sc_event *_sc_event, const char *_basename_cstr) : 4913086Sgabeblack@google.com _sc_event(_sc_event), _basename(_basename_cstr ? _basename_cstr : ""), 5013243Sgabeblack@google.com delayedNotify([this]() { this->notify(); }), _triggeredStamp(~0ULL) 5112955Sgabeblack@google.com{ 5212955Sgabeblack@google.com Module *p = currentModule(); 5312955Sgabeblack@google.com 5413086Sgabeblack@google.com if (_basename == "" && ::sc_core::sc_is_running()) 5513086Sgabeblack@google.com _basename = ::sc_core::sc_gen_unique_name("event"); 5613086Sgabeblack@google.com 5712955Sgabeblack@google.com if (p) 5812955Sgabeblack@google.com parent = p->obj()->sc_obj(); 5912955Sgabeblack@google.com else if (scheduler.current()) 6012955Sgabeblack@google.com parent = scheduler.current(); 6112988Sgabeblack@google.com else 6212988Sgabeblack@google.com parent = nullptr; 6312955Sgabeblack@google.com 6413179Sgabeblack@google.com std::string original_name = _basename; 6513179Sgabeblack@google.com _basename = pickUniqueName(parent, _basename); 6613127Sgabeblack@google.com 6712955Sgabeblack@google.com if (parent) { 6812955Sgabeblack@google.com Object *obj = Object::getFromScObject(parent); 6912988Sgabeblack@google.com obj->addChildEvent(_sc_event); 7012955Sgabeblack@google.com } else { 7112988Sgabeblack@google.com topLevelEvents.emplace(topLevelEvents.end(), _sc_event); 7212955Sgabeblack@google.com } 7312955Sgabeblack@google.com 7413179Sgabeblack@google.com std::string path = parent ? (std::string(parent->name()) + ".") : ""; 7513179Sgabeblack@google.com 7613179Sgabeblack@google.com if (original_name != "" && _basename != original_name) { 7713179Sgabeblack@google.com std::string message = path + original_name + 7813179Sgabeblack@google.com ". Latter declaration will be renamed to " + 7913179Sgabeblack@google.com path + _basename; 8013179Sgabeblack@google.com SC_REPORT_WARNING("(W505) object already exists", message.c_str()); 8113179Sgabeblack@google.com } 8213179Sgabeblack@google.com 8313179Sgabeblack@google.com _name = path + _basename; 8412955Sgabeblack@google.com 8512955Sgabeblack@google.com allEvents.emplace(allEvents.end(), _sc_event); 8612955Sgabeblack@google.com 8712955Sgabeblack@google.com // Determine if we're in the hierarchy (created once initialization starts 8812955Sgabeblack@google.com // means no). 8912955Sgabeblack@google.com} 9012955Sgabeblack@google.com 9112955Sgabeblack@google.comEvent::~Event() 9212955Sgabeblack@google.com{ 9312955Sgabeblack@google.com if (parent) { 9412955Sgabeblack@google.com Object *obj = Object::getFromScObject(parent); 9512988Sgabeblack@google.com obj->delChildEvent(_sc_event); 9612955Sgabeblack@google.com } else { 9712988Sgabeblack@google.com EventsIt it = find(topLevelEvents.begin(), topLevelEvents.end(), 9812988Sgabeblack@google.com _sc_event); 9912988Sgabeblack@google.com assert(it != topLevelEvents.end()); 10012988Sgabeblack@google.com std::swap(*it, topLevelEvents.back()); 10112955Sgabeblack@google.com topLevelEvents.pop_back(); 10212955Sgabeblack@google.com } 10312955Sgabeblack@google.com 10412955Sgabeblack@google.com EventsIt it = findEvent(_name); 10512955Sgabeblack@google.com std::swap(*it, allEvents.back()); 10612955Sgabeblack@google.com allEvents.pop_back(); 10712957Sgabeblack@google.com 10813063Sgabeblack@google.com if (delayedNotify.scheduled()) 10913063Sgabeblack@google.com scheduler.deschedule(&delayedNotify); 11012955Sgabeblack@google.com} 11112955Sgabeblack@google.com 11212955Sgabeblack@google.comconst std::string & 11312955Sgabeblack@google.comEvent::name() const 11412955Sgabeblack@google.com{ 11512955Sgabeblack@google.com return _name; 11612955Sgabeblack@google.com} 11712955Sgabeblack@google.com 11812955Sgabeblack@google.comconst std::string & 11912955Sgabeblack@google.comEvent::basename() const 12012955Sgabeblack@google.com{ 12112955Sgabeblack@google.com return _basename; 12212955Sgabeblack@google.com} 12312955Sgabeblack@google.com 12412955Sgabeblack@google.combool 12512955Sgabeblack@google.comEvent::inHierarchy() const 12612955Sgabeblack@google.com{ 12712955Sgabeblack@google.com return _name.length() != 0; 12812955Sgabeblack@google.com} 12912955Sgabeblack@google.com 13012955Sgabeblack@google.comsc_core::sc_object * 13112955Sgabeblack@google.comEvent::getParentObject() const 13212955Sgabeblack@google.com{ 13312955Sgabeblack@google.com return parent; 13412955Sgabeblack@google.com} 13512955Sgabeblack@google.com 13612955Sgabeblack@google.comvoid 13713208Sgabeblack@google.comEvent::notify(StaticSensitivities &senses) 13813208Sgabeblack@google.com{ 13913208Sgabeblack@google.com for (auto s: senses) 14013208Sgabeblack@google.com s->notify(this); 14113208Sgabeblack@google.com} 14213208Sgabeblack@google.com 14313208Sgabeblack@google.comvoid 14413208Sgabeblack@google.comEvent::notify(DynamicSensitivities &senses) 14513208Sgabeblack@google.com{ 14613208Sgabeblack@google.com int size = senses.size(); 14713208Sgabeblack@google.com int pos = 0; 14813208Sgabeblack@google.com while (pos < size) { 14913208Sgabeblack@google.com if (senses[pos]->notify(this)) 15013208Sgabeblack@google.com senses[pos] = senses[--size]; 15113208Sgabeblack@google.com else 15213208Sgabeblack@google.com pos++; 15313208Sgabeblack@google.com } 15413208Sgabeblack@google.com senses.resize(size); 15513208Sgabeblack@google.com} 15613208Sgabeblack@google.com 15713208Sgabeblack@google.comvoid 15813260Sgabeblack@google.comEvent::notify(ResetSensitivities &senses) 15913260Sgabeblack@google.com{ 16013260Sgabeblack@google.com for (auto s: senses) 16113260Sgabeblack@google.com s->notify(this); 16213260Sgabeblack@google.com} 16313260Sgabeblack@google.com 16413260Sgabeblack@google.comvoid 16512955Sgabeblack@google.comEvent::notify() 16612955Sgabeblack@google.com{ 16713187Sgabeblack@google.com if (scheduler.inUpdate()) { 16813187Sgabeblack@google.com SC_REPORT_ERROR("(E521) immediate notification is not allowed " 16913187Sgabeblack@google.com "during update phase or elaboration", ""); 17013187Sgabeblack@google.com } 17113187Sgabeblack@google.com 17213073Sgabeblack@google.com // An immediate notification overrides any pending delayed notification. 17313073Sgabeblack@google.com if (delayedNotify.scheduled()) 17413073Sgabeblack@google.com scheduler.deschedule(&delayedNotify); 17513073Sgabeblack@google.com 17613243Sgabeblack@google.com _triggeredStamp = scheduler.changeStamp(); 17713260Sgabeblack@google.com notify(resetSense); 17813208Sgabeblack@google.com notify(staticSenseMethod); 17913208Sgabeblack@google.com notify(dynamicSenseMethod); 18013208Sgabeblack@google.com notify(staticSenseThread); 18113208Sgabeblack@google.com notify(dynamicSenseThread); 18212955Sgabeblack@google.com} 18312955Sgabeblack@google.com 18412955Sgabeblack@google.comvoid 18512955Sgabeblack@google.comEvent::notify(const sc_core::sc_time &t) 18612955Sgabeblack@google.com{ 18713063Sgabeblack@google.com if (delayedNotify.scheduled()) { 18813063Sgabeblack@google.com if (scheduler.delayed(t) >= delayedNotify.when()) 18912957Sgabeblack@google.com return; 19012957Sgabeblack@google.com 19113063Sgabeblack@google.com scheduler.deschedule(&delayedNotify); 19212957Sgabeblack@google.com } 19313063Sgabeblack@google.com scheduler.schedule(&delayedNotify, t); 19412955Sgabeblack@google.com} 19512955Sgabeblack@google.com 19612955Sgabeblack@google.comvoid 19712955Sgabeblack@google.comEvent::cancel() 19812955Sgabeblack@google.com{ 19913063Sgabeblack@google.com if (delayedNotify.scheduled()) 20013063Sgabeblack@google.com scheduler.deschedule(&delayedNotify); 20112955Sgabeblack@google.com} 20212955Sgabeblack@google.com 20312955Sgabeblack@google.combool 20412955Sgabeblack@google.comEvent::triggered() const 20512955Sgabeblack@google.com{ 20613243Sgabeblack@google.com return _triggeredStamp == scheduler.changeStamp(); 20712955Sgabeblack@google.com} 20812955Sgabeblack@google.com 20912955Sgabeblack@google.comEvents topLevelEvents; 21012955Sgabeblack@google.comEvents allEvents; 21112955Sgabeblack@google.com 21212955Sgabeblack@google.comEventsIt 21312955Sgabeblack@google.comfindEvent(const std::string &name) 21412955Sgabeblack@google.com{ 21512955Sgabeblack@google.com EventsIt it; 21612955Sgabeblack@google.com for (it = allEvents.begin(); it != allEvents.end(); it++) 21712955Sgabeblack@google.com if (!strcmp((*it)->name(), name.c_str())) 21812955Sgabeblack@google.com break; 21912955Sgabeblack@google.com 22012955Sgabeblack@google.com return it; 22112955Sgabeblack@google.com} 22212955Sgabeblack@google.com 22312955Sgabeblack@google.com} // namespace sc_gem5 224